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Old 10-26-2016, 07:10 AM   #2
maubp
Peter (Biopython etc)
 
Location: Dundee, Scotland, UK

Join Date: Jul 2009
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This is a near duplicate of your other thread where you have been given advice and help: http://seqanswers.com/forums/showthread.php?t=72083

The .nal file is a plain text file describing how to treat a set of BLAST nucleotide database "chunks" as a single database. When making a database from a single FASTA file this won't happen (unless your FASTA file has an enormous number of sequences).

Last edited by maubp; 10-26-2016 at 07:11 AM. Reason: fixed markup
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